diff options
| author | Tejun Heo <htejun@gmail.com> | 2006-04-01 01:38:18 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-04-01 14:52:08 -0500 |
| commit | 852ee16a914fb3ada2f81e222677c04defc2f15f (patch) | |
| tree | 8635f8a309a023e0991e30a6a3583aafd91b99f5 | |
| parent | e82cbdb9a3791f781462c9d00e3486e8fb7e58a8 (diff) | |
[PATCH] libata: preserve SATA SPD setting over hard resets
Don't overwrite SPD setting during hard reset. This change has the
(intended) side effect of honoring the BIOS configuration.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/scsi/libata-core.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 061b0b6544cc..3acf56200d87 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -2132,9 +2132,11 @@ err_out: static int sata_phy_resume(struct ata_port *ap) { unsigned long timeout = jiffies + (HZ * 5); - u32 sstatus; + u32 scontrol, sstatus; - scr_write_flush(ap, SCR_CONTROL, 0x300); + scontrol = scr_read(ap, SCR_CONTROL); + scontrol = (scontrol & 0x0f0) | 0x300; + scr_write_flush(ap, SCR_CONTROL, scontrol); /* Wait for phy to become ready, if necessary. */ do { @@ -2247,10 +2249,14 @@ int ata_std_softreset(struct ata_port *ap, int verbose, unsigned int *classes) */ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class) { + u32 scontrol; + DPRINTK("ENTER\n"); /* Issue phy wake/reset */ - scr_write_flush(ap, SCR_CONTROL, 0x301); + scontrol = scr_read(ap, SCR_CONTROL); + scontrol = (scontrol & 0x0f0) | 0x301; + scr_write_flush(ap, SCR_CONTROL, scontrol); /* * Couldn't find anything in SATA I/II specs, but AHCI-1.1 |